Slack Notifications → Generate Voice Alerts → Send via WhatsApp

intermediate25 minPublished Mar 26, 2026
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Create personalized voice notifications for critical Slack messages and deliver them instantly via WhatsApp, ideal for remote teams and executives who need immediate audio alerts.

Workflow Steps

1

Zapier

Monitor Slack for keywords

Create a Zapier trigger that monitors specific Slack channels for urgent keywords like 'CRITICAL', '@everyone', or specific project names. Set up filters to only capture high-priority messages that require immediate attention.

2

Mistral Speech Model

Convert message to speech

Send the Slack message content to Mistral's speech model via API. Configure the voice to be clear and urgent. Since the model runs on mobile devices, it can generate audio quickly without server delays, perfect for real-time alerts.

3

Twilio

Process audio for messaging

Use Twilio's API to format the generated audio file for WhatsApp delivery. Ensure the audio meets WhatsApp's file size and format requirements (under 16MB, MP3/AAC format).

4

WhatsApp Business API

Send voice message

Deliver the voice message to designated WhatsApp numbers or groups. Include a text preview of the original Slack message for context. Set up delivery confirmations to ensure the alert was received.

Workflow Flow

Step 1

Zapier

Monitor Slack for keywords

Step 2

Mistral Speech Model

Convert message to speech

Step 3

Twilio

Process audio for messaging

Step 4

WhatsApp Business API

Send voice message

Why This Works

Mistral's mobile-optimized speech model ensures fast, on-device processing for time-sensitive alerts, while WhatsApp provides reliable global delivery with high open rates.

Best For

Remote teams needing urgent voice alerts for critical issues

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